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drm: Don't return 0 for a value used as a denominator

Message ID 1407520218-15323-1-git-send-email-damien.lespiau@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Lespiau, Damien Aug. 8, 2014, 5:50 p.m. UTC 
Static analysis will be unhappy if a function can theoretically return
0 and we're trying to divide by that value.

Mark that case that cannot occur as a BUG() instead.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
---
 drivers/gpu/drm/drm_dp_mst_topology.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/gpu/drm/drm_dp_mst_topology.c b/drivers/gpu/drm/drm_dp_mst_topology.c
index 352f5d6..b3adf14 100644
--- a/drivers/gpu/drm/drm_dp_mst_topology.c
+++ b/drivers/gpu/drm/drm_dp_mst_topology.c
@@ -1772,7 +1772,7 @@  static int drm_dp_get_vc_payload_bw(int dp_link_bw, int dp_link_count)
 	case DP_LINK_BW_5_4:
 		return 10 * dp_link_count;
 	}
-	return 0;
+	BUG();
 }
 
 /**